CN205240618U - Belt is vertically torn and is detected and alarm device based on vision - Google Patents
Belt is vertically torn and is detected and alarm device based on vision Download PDFInfo
- Publication number
- CN205240618U CN205240618U CN201520840507.8U CN201520840507U CN205240618U CN 205240618 U CN205240618 U CN 205240618U CN 201520840507 U CN201520840507 U CN 201520840507U CN 205240618 U CN205240618 U CN 205240618U
- Authority
- CN
- China
- Prior art keywords
- belt
- digital camera
- ccd digital
- size
- alarm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000003287 optical effect Effects 0.000 claims abstract description 4
- 238000003384 imaging method Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 11
- 238000009434 installation Methods 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000035945 sensitivity Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 230000001186 cumulative effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Image Analysis (AREA)
- Image Processing (AREA)
Abstract
The utility model discloses a belt is vertically torn and is detected and alarm device based on vision, the device comprises image data treater, CCD digital camera and alarm, installs in the belt below, and whether the non - loading end of the perpendicular belt of CCD digital camera optical axis, image data treater are handled the detection belt to the belt image and are taken place vertically to tear, trigger alarm sounds and the light warning of twinkleing if vertically tearing appears in the belt, and the device's detection method is non -contact, and wearing and tearing can not suffered to the check out test set, and the detection sensitivity is high, and with low costs, the equipment subassembly is few, the easy installation and the maintenance.
Description
Technical field
The present invention relates to a kind of ribbon conveyer belt longitudinal tear and detect and warning device, relate in particular to a kind of contactless belt longitudinal tear based on vision and detect and warning device.
Background technology
In coal production, ribbon conveyer is one of topmost means of transport, and ribbon conveyer happens occasionally in the belt longitudinal tear accident in coal process of carrying, if found not in time, can cause whole piece belt tearing to damage, and causes huge economic loss. the method that detects at present belt longitudinal tear has: impulse detection method (detecting impulsive force in belt medium propagates), the abnormal stressed detection of carrying roller (analyzing the stressed unusual condition of carrying roller), supercritical ultrasonics technology (detecting ultrasonic propagation in belt medium), piezo-resistance method (detect belt below and leak material situation), embedding inlay technique (embeds conductive rubber in belt, optical fiber etc.) etc., also has in addition the image detection based on line laser, above-mentioned detection method or have certain defect in principle, or need belt tearing to grow and just can detect, or cost is higher, or installation component is many, install complicated, or later maintenance is loaded down with trivial details etc.
Need a kind of belt longitudinal tear detection method that solves or at least improve one or more problems intrinsic in prior art.
Summary of the invention
Therefore the object of the present invention is to provide a kind of belt longitudinal tear based on vision to detect and warning device, the detection method of this device is contactless, and checkout equipment can not be worn and torn, and detects sensitive height, and cost is low, and apparatus assembly is few, easily I&M.
According to a kind of embodiment form, provide a kind of belt longitudinal tear based on vision to detect and warning device, technical scheme provided by the invention is as follows: apparatus of the present invention are by image data processor, CCD digital camera (comprising shutter, flash lamp and lens), alarm composition; Described image data processor is the core of whole device, for controlling the shutter opening of CCD digital camera and closing, flash lamp opens and closes and lens position adjustment, also for controlling, alarm is sounded and the light that glimmers, also for whether there is longitudinal tear to processing to identify belt from the image of CCD digital camera; Described flash lamp provides light source in the time taking for CCD digital camera; Described alarm is sounded in the time of belt generation longitudinal tear and the light that glimmers is reported to the police; This device is arranged on belt below, CCD digital camera optical axis vertical strap non-bearing face, the image size of CCD digital camera picked-up is 640 (width) × 480 (highly) pixels, the corresponding belt width direction of width, the corresponding belt axial direction of short transverse.
Apparatus of the present invention operation principle is: when image data processor control CCD digital camera is opened shutter picked-up belt image, open flash lamp to there is enough light to absorb strap surface image clearly simultaneously, whether the image obtaining, by predefined logic detection belt, longitudinal tear is occurred to, if longitudinal tear appears in belt, trigger alarm device is sounded and the light that glimmers is reported to the police. The method that detects belt longitudinal tear is:
A. define N bar and belt shaft to approximate consistent line segment, described line segment is defined as the element belonging in S=K × M, wherein M=[90 °-φ, 90 °+φ] × L, define direction and the length L of line segment, φ is the angle value of setting;
B. to arbitrary line segment u wherein, calculate all tangent sections orthogonal with it, tangent section parameter e, lextDescribe, e is the intersegmental distance of consecutive tangent, lextFor half length of tangent section, line segment u divides equally tangent section;
C. for each tangent section of line segment u, with spacing, r samples, and calculates the shade of gray value of each sample point, retains shade of gray value and is greater than setting threshold glSampled point; The shade of gray value of the cumulative point remaining, retains the point that accumulated value is greater than setting threshold gh, wherein, and gl，ghBe given parameter, | gh|＞|gl|；
D. be l by lengthselLine element accumulated value in all tangent sections of line segment u is greater than to ghPoint make morphology opening operation;
E. calculate accumulated value and be greater than ghThe P that counts;
F. calculate the K that counts that is less than σ apart from the distance of line segment u, whenWhile being greater than η, judgement belt is torn, otherwise, get another line segment in N bar line segment, repeating step B; Wherein, σ and η are given parameter.
In the time judging belt generation longitudinal tear, trigger alarm device generation sound and flicker light are reported to the police.
Brief description of the drawings
By following explanation, accompanying drawing embodiment becomes apparent, its only with describe by reference to the accompanying drawings at least one preferably but the way of example of non-limiting example provide.
Fig. 1 is apparatus of the present invention structural representation.
Fig. 2 is the line segment schematic diagram of the inventive method.
Fig. 3 is the tangent section schematic diagram of the inventive method.
Fig. 4 is the detection principle schematic of the inventive method.
Detailed description of the invention
Referring to Fig. 1, apparatus of the present invention are by image data processor, CCD digital camera (comprising shutter, flash lamp and lens) and alarm composition; Image data processor NvidiaTegraK1 processor, the Kepler graphics accelerator GPU that it comprises 192 cores, 2.2GHzARMCortexA15CPU and 2GBRAM memory, thereby compact conformation is simple, device is few, CCD digital camera adopts Fcam micro-camera, and the image of seizure is input to image data processor by MiPi-SCi, and image data processor passes through I2The shutter opening of the total line traffic control CCD digital camera of C with close, flash lamp open and close and lens position; Sound and glimmer light by spi bus control alarm. Device is arranged on to belt below, CCD digital camera optical axis vertical strap non-bearing face, when work, absorb belt image by image data processor control CCD digital camera, image size is 640 (width) × 480 (highly) pixels, the corresponding belt width direction of width, the corresponding belt axial direction of short transverse. The image obtaining is performed as follows to method processing:
In image coordinate system, the S set=K × M of a Description Image middle conductor of definition, wherein K=[0, Xmmax]×[0，Xnmax]，XmmaxFor picture traverse direction maximum pixel coordinate, XnmaxFor picture altitude direction maximum pixel coordinate; M=[90 °-φ, 90 °+φ] × L, define direction and the length of line segment, Jian's shadow length when its length L is defined as belt generation minimum detectable longitudinal tear length on image, φ is the angle value of setting, and value is for making line segment direction approximate consistent with belt axial direction; Line segment u ∈ S in definition set, u=(c1(u)，c2(u), θ (u), L), wherein c1(u)，c2(u) be respectively line segment u central point at picture traverse direction and short transverse coordinate, the direction that θ (u) is line segment, as shown in Figure 2. The tangent section of definition cutting line segment u, tangent section parameter e, r, lextDescribe, e is the intersegmental distance of consecutive tangent, and r is the dot spacing of sampling tangent section, lextFor half length of tangent section, as shown in Figure 3. Detect principle as shown in Figure 4, the cutting line segment of the imaging schematic diagram while there is shown belt tearing and a given line segment and this line segment and the discontinuity point detecting. Concrete treatment step is as follows:
A. define the line segment that N bar belongs to S set;
B. to arbitrary line segment u wherein, calculate all tangent sections orthogonal with it;
C. for each tangent section of line segment u, with spacing, r samples, and calculates the shade of gray value of each sample point, retains shade of gray value and is greater than setting threshold glSampled point; The shade of gray value of the cumulative point remaining, retains accumulated value and is greater than setting threshold ghPoint, wherein, gl，9hBe given parameter, | gh|＞|gl|；
D. be l by lengthselLine element accumulated value in all tangent sections of line segment u is greater than to ghPoint make morphology opening operation;
E. calculate accumulated value and be greater than ghThe P that counts;
F. calculate the K that counts that is less than σ apart from the distance of line segment u, whenWhile being greater than η, judgement belt is torn, otherwise, get another line segment in N bar line segment, repeating step B; Wherein, σ and η are given parameter.
In the time judging belt generation longitudinal tear, trigger alarm device generation sound and flicker light are reported to the police.
Claims (1)
1. the belt longitudinal tear based on vision detects and a warning device, it is characterized in that: be made up of image data processor, CCD digital camera, alarm; Described CCD camera comprises shutter, flash lamp and lens; Described image data processor is the core of whole device, for controlling the shutter opening of CCD digital camera and closing, flash lamp opens and closes and lens position adjustment, also for controlling, alarm is sounded and the light that glimmers, also for whether there is longitudinal tear to processing to identify belt from the image of CCD digital camera; Described flash lamp provides light source in the time taking for CCD digital camera; Described alarm is sounded in the time of belt generation longitudinal tear and the light that glimmers is reported to the police; This device is arranged on belt below, CCD digital camera optical axis vertical strap non-bearing face, the image size of CCD digital camera picked-up is 640 pixel × 480 pixels, 640 represent picture traverse size, 480 represent picture altitude size, the corresponding belt width direction imaging size of width size, the corresponding belt axial direction of height size imaging size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520840507.8U CN205240618U (en) | 2015-10-28 | 2015-10-28 | Belt is vertically torn and is detected and alarm device based on vision |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520840507.8U CN205240618U (en) | 2015-10-28 | 2015-10-28 | Belt is vertically torn and is detected and alarm device based on vision |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205240618U true CN205240618U (en) | 2016-05-18 |
Family
ID=55939693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520840507.8U Expired - Fee Related CN205240618U (en) | 2015-10-28 | 2015-10-28 | Belt is vertically torn and is detected and alarm device based on vision |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205240618U (en) |
-
2015
- 2015-10-28 CN CN201520840507.8U patent/CN205240618U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107948465B (en) | A kind of method and apparatus that detection camera is disturbed | |
| MX2017012904A (en) | Multi-sensor precipitation-classification apparatus and method. | |
| CL2021000547A1 (en) | Ore monitoring | |
| CN103986906B (en) | Door opening and closing detection method based on monitoring videos | |
| CN107464428A (en) | A kind of tunnel traffic anomalous identification warning device | |
| CN110239914B (en) | Longitudinal tearing detection early warning device and method for infrared audio-visual frequency spectrum fusion conveying belt | |
| EP3299330A3 (en) | Detection of state of engagement between step and comb plate of passenger conveyor | |
| US20160114806A1 (en) | Safe driving monitoring system and method | |
| EP4235597A3 (en) | Vehicle speed limit display device | |
| US20190080460A1 (en) | Reflection determining apparatus | |
| CN110015553A (en) | Travelling belt system foreign bodies detection guard method based on video analysis | |
| WO2013047088A1 (en) | Biometric device | |
| Zeng et al. | The research of coal mine conveyor belt tearing based on digital image processing | |
| CN204979431U (en) | Carton detection device | |
| CN205240618U (en) | Belt is vertically torn and is detected and alarm device based on vision | |
| CN106815831B (en) | Method and device for detecting abrasion of steel wire rope | |
| CN115018869A (en) | Belt deviation detection method | |
| JP2016206071A (en) | Inspection device and inspection method | |
| CN205240617U (en) | Belt is vertically torn and is detected and alarm device based on image discontinuity point is surveyed | |
| CN107609498B (en) | Data processing method of computer monitoring system | |
| CN111079612A (en) | Method and device for monitoring retention of invading object in power transmission line channel | |
| CN105293002B (en) | The belt longitudinal tear detection method of view-based access control model | |
| CN114757905A (en) | Vision-based rope winding abnormity detection device and method | |
| CN110874544B (en) | Metallurgical driving safety monitoring and identifying method | |
| CN112830189A (en) | Conveyer belt tears prevention detection device based on binocular vision |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160518 Termination date: 20201028 |